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Ement.el vs Quaternion: catalog facts
Ement.el	Quaternion
Free Free and open source under the GPL-3.0.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Matrix chat without leaving Emacs Uses Emacs buffers and keybindings	Native Qt interface instead of a web wrapper Works with any Matrix homeserver
Requires GNU Emacs and some familiarity with it Text-focused, with no standalone interface	Smaller project than the major Matrix clients such as Element Development pace is slower than larger clients
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.